]Kwere na ọtụtụ ndị enyi niile zụtara mma kichin ma ọ bụ hụ mma kichin, ma maka mmepụta nke kichin mma ígwè ga-enwe mgbagwoju anya, ihe a dị mma?
Kedu ihe bụ ihe a?
Igwe anaghị agba nchara?
Ma ọ bụ ígwè?
Echegbula onwe gị, obere ihe mebere gị ga-ebu ụzọ webata chrome steel (
cr)
, ihe dị iche n'etiti ngwaahịa akọrọ ndị ọzọ na-esote.
1, ígwè chrome atọ: carbon (
C)
Agụnyere 0.
28 -
0.
35% nwere chromium (
Cr)
12.
8 -
13.
5% nke ihe mejupụtara.
Mgbe ọgwụgwọ emenyụ mmanụ, ike nwere ike iru 54 -
56 HRC.
Ngwaahịa usoro ihe nchara: nkọ, Yi Fu egweri, adịghị mfe nchara.
2,4 chrome ígwè, carbon,
C)
Agụnyere 0.
35 -
0.
45% nwere chromium (
Cr)
12.
8 -
13.
5%, molybdenum
Mo)
0.
5% vanadium
(五)
0.
3 -
0.
5% nke ihe mejupụtara.
The forging mgbe okpomọkụ mgbasawanye, ike ike nwere ike ruo 56 -
58HRC.
Ngwaahịa usoro ihe nchara: nkọ karịa, nchara na siri ike, adịghị mfe ịgbaji crisp, ọzọ mma, Yi Fu egweri ọka.
3,5 chrome ígwè, carbon,
C)
0.
68 -
0.
75% nwere chromium (
Cr)
16.
7 -
17.
5%, molybdenum
Mo)
0.
5% nke ihe ndị dị ka;
Mgbe ọgwụgwọ na-emenyụ mmanụ, 58 - ike nwere ike nweta
60HRC.
Ngwaahịa usoro ihe nchara: ihe siri ike ma dị nkọ, na-adịgide adịgide, nchara na ịdị elu dị elu.
